Sand-trap.



W. H. WHITE.

. SAND TRAP.

APPLICATION FILED JUNE 2; 1914.

.?atented Nov. 10, 19141.

' 2 SHEETS-SHEET 1.

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wi llmeaoeo 4 n 7/ W. H. WHITE.

SAND TRAP.

- APPLICATION FILED JUNE 2, 1914.

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WILZIAIVI H. WHITE, 0 ROANOKE, VIRGINIA.

semi-TRAP.

iaiigiie'.

To all whom it m (23 concern Be it known that 1., WILLIAM H. Vfnrrn, a citizen of the United States residing at Roanoke in the county of Roanoke and State of; Virginia, have invented new and ,useful Improvements in Sand-Traps, of

through the feed tube to the track, the pres ent invention constituting an improvement upon that shown in my prior Patent No.

LOSGQG l, dated'Feb. 10, 1914.

The main object of the present invention is the provision of asand trap in which the use of a nozzle having a check-valve or other elements liable to be choked with sand is avoided, and in which a seltclearing nozzle of novel construction is employed.

A furtherobjeet of the invention is the provision of a trap in which the sand. channel is so formed as to prevent the gravity feed of the sand therethrough, While at the same time ali'ording little obstruction to the movement of the sand under the influence of the air blast.

A further object of the invention is the provision oil a nozzle,- which in addition to being self-clearing, may be removed to permit-the trap to be cleaned out, and vnich is designed to direct the air blast in such a manner as to secure positive teen of the sand, while avoiding an objection-able con centration and Wearing action of the blast on the walls oi the trap.

' A further object of the invention is the utilization of an air blast operating through a portion oi the trap and beyond the sand channel therein. which blast is utilized when neeessa v as a cleanout medium for the feed tube b yond the trap.-W ereby said tube may he at all-times mai rained ineffective condition for the proper movement of the sand therethrough in sanding the track.

A further object of the invention is to provide aconstruction of eleanout connec tions whereby proper cleanout actions of the feed tubes at the opposite sides of a locomotive may be obtained Without the use of Valves and also Without Waste of air.

The invention in-the preferred form of details, will be described in the following Specification of Letters Patent.

Application filed June 2, 1914.

?a-tented Nov. 10, 1 9 14 Serial No. 842,425.

specification reference being had particularly to the accompanying drawings, in which.

Figure l is aplan view of traps arranged at the opposite sides of a locomotive andthe eoacting clean out blast delivery pipes. Fi 2 is a side elevation of the improved trap and connections. Fig. 3 is a longitudinal section of the same. Fig. i is a detail section of the coupling member on an enlarged scale. 7

'l he improved trap, which side from the details hereinafter described may be in any form, preferably comprises a T-shapedhody 1 having an uprig'l'it section 2 designed for connection toa suitable pipe leadingfroni the source oi? supply. and a lateral section 3, the terminal of which is designed to be connected in any usual or preferred manner to the sanding or delivery tube 4 for the delivery of the material to the track. The body is interiorly and longitudinally cored to provide What 1 term a sand channel 5, the formed wall of this channel from a point beyond the upright of the body to a point a slight distance from the outlet end of the body being on a downwardly curved plane, as at'6, the curved portion of the channel forming a trap to prevent the travel of the sand through the channel by gravity or unthe jars to which the body is subjected in the travel of the engine. The body 1 at approximately the juncture. of the upright and lateral portions of the channel is cored and inte'riorly threaded at 7, and above the here or opening 7 the upright portion 2 is provided with an interiorly threaded opening 8. These openings 7 and 8 are designed to provide a. me ns "whereby the sand channel may be cleaned out by any suitable tools, when such inay become necessary, the open ing 7 also serving for the reception oi the blast nozzle vviiiiie the opening 8 may he closed in practice by a plug or other suit. hie closure.

The blast nozzle 9 comprises a eylindricai body having at its inner end an angular head or flange 10 for the application oi a Wrench, and provided at such end With a threaded nipple 1i fitting Within the hreaded acre 7. said nipple terminating in. a reduced blast tube 127 The o'uterend of the nozzle is cored and internally threaded, as at 13, to receive the threaded may 14% of a coupling member 15, saidcoupling member being provided at its otter end with t-Zd .tive. l

v for the application of a threads at the core 13 termh t e inner end of the core,

ed to provide a. bowlcentrally connnnnh more or passage l8 w:- 1" :roug'li the bod) 22nd nipple 1 here being .lilared or erxaril or delivei v end and z 1 the bore ll) of the blast nannel, and the usual sand. 'lhe bony bf; "wered tliireu g'h eonpling iply pipe 2 comm-ted air to the receiving),

it n en to and finally from said the )rz; re pro lianieter in: tie channel 5 i mine eoneenliiatinn oil the blunt 22nd livery ole the ild in an ob ieetionabl eom nzet n and under objee tionable in lienee the stand will he spread body under .1

(.ll} ii vei'e eonipar: :l u l t-w but at the same lune :l 1 lllY snllieien i i. for delivl-i so that the eoncenlr il r n the blast and eutlii I away of the walb ml the trap er delivenv tube will be el /s, avoided. All rap (aninn 'nrrl'ion. is tlunrlore adapt i'; "innoug sau'i'iee. r that the nozzle 0 devoid in me l\ v: ves ol' other elements liable to eloal. and render the nozzle inopvrw he 'oin-l rieird diameter oi? the bore lendi in t0 n'rvi-nii he {Hhkilll'f: of arns-lee ol' Filili lln-i inn, while ilie bore l) ol the blast tube 1'13 i ol :-'ullieient diameter 1-; be sell i'li-arinn' under all nrdinanv and normal rondiliom. ll; :-:oneli1ner-: happens, howewr,

that FlllnllPilIllUlOti of sand will \H'lih' ban-l; into the here n l'roin the jars; and vilu'a'l;i n:

travel of the engine, ann l'lui therefore provided in r eiv' 'ineidez-ig; to llaehai'nb ,r 17 and trap ll are adapted lo #trilxe the curved wall of the bowl and prtul u-e a whirl or vortex whereby iln'nugh the bores l8 and 1.9 into the channel 4-. Any retention of Hlllld particles by 'avity in the enaniber l? is thus prevented and the nozzle kept elear without the use of .ll'VQ-S or other extraneous; devices which are liablev to bind, clog or to be otherwise rendered inoperative by partieles of sand.

Upon ren'ioving the nozzle tron'l the openthe ehanne may be cleaned out through ,l opening, as will be readily understood. An auxiliary plerfSlllQ channel 23 is formed in the body 1 and opens into the cleliverv end thereof beyond the deliver end of the sand channel el, said pressure channel entering the body at a point adjacent i's' .l'orward the entrain-e end being internally eadec to i'eeeive the deliver; end all a 1 l l. nine '25 while the outlet ill of sain passage is interiorly threaded to receive the inlet end of a *learance blast tube 27 which extends into the entranee end olf the sand ing or delivery tube 5. The tube 5 curves downwardly at its enlranee end to dispose said tube at the proper delivery angle and the tube 27 is similarly bent within the tube 5, so as to lie out of the path of the aainl, delivered into said tube 5 by the blast nozzle. Tillullflfli the rhannel and tune Q? a blast of air may be delivered into the tube 5 to free said tube .3, whenever choked,

l'roni a rennndated material, as will be ll'illllY nmlernteed. The auxiliary blaat pipes extend up to the loo of the boih and are lllllfll ('onnecled bv a 'l"'--eonpliin 2% will a supply pipe 22) leading lroni the locomotive eab, mid nine 22) bavinn a eontrolling valve 3!), Wherebv the fried of air to said auxiliary ehannelw may he eonlrolled. 'lhe rhannelsQIl are longitudinally tapered being oil renlri ted diameter at their delivery ends with relation to their entrance ends and to the pipes or tubes 5, So that the blast of air jellinp; therelhronn'h is retarded to a degree in it llow. l3) lhns constricting said channels the necessity of employing! valves to 'rol he supply oi. air from the pipe :29 l rezw-peetive Channels :23 is; avoided, aim-c; in. the event of one of the tubes l bei- 'l fllll l and llnv valve 30 being open-ed.

the ehannrha 1 the entrapped sand taken out by the whirlany; eolunin oi? an: and Carried. tllCICWlil).

whereby the latter will be cleared. This construction prevents the delivery of air solely through the course of least resistance, by which the clogged tube would be deprived of a blast, and also avoids the addition of valves or other controlling devices increasing the susceptibility of the sanding apparatus to derangement.

It will be seen from the foregoing that the present invention provides substantial improvements over my prior patented structure and obviates the necessity ofemplo ing a shelf overhanging the delivery end 0 the nozzle and clearance channel or pocket beneath the delivery end of the nozzle, also the use of a check valve in the nozzle, while at the same time a free cleaning out of the sand .channel Whenever required may be conveniently effected. It will, of course, be understood that the nozzle may be mounted and lockedfor adjustment to dispose the delivery end of the nozzle to regulate the feeding effect of the blast on the sand, as in my aforesaid patented structure.

I claim I 1. A sand trap formed with a sand channel, a blast pipe connected therewith, and a blast nozzle communicating with said channel, said nozzle having a longitudinally continuous bore provided with a chamber for collecting particles of sand working therein and means for delivering the blast in a pluiality of jets in said chamber at an angle to the line of the bore so as to produce a Whirl in the current of air to take up and discharge said particles.

2. A sand trap formed with a' sand channel, a blast pipe connected at an angle therewith, a clean-out blast channel closed against the sand channel, and a blast tube leading from said blast channel and extending into said blastpipe at an angle conforming to the latter.

3. A sand trap formed with a sand channel, a blast pipe connected at an angle there- \vith,'a clean-out blast channel closed against the sand channel said blast channel having an enlarged receiving end. and a relatively constricted delivery end, and a blast tube leading from the constricted delivery end of the blast channel into said blast pipe at an angle conforming to the latter.

4. In a sanding apparatus, the combination of a pair of sand traps each having a sand channel and a constricted blast channel closed to. said sand channel, blast pipes connected with the delivery ends of the sand channels of the traps, blast tubes leading from the delivery ends of the blast channels into the,

blast pipes, air conducting pipes leading to the inlet ends of the blast channels, a cross pipe connected with said conducting pipes and an air supply pipe connected with said cross pipe; p

5. A sand trap formed with a sand channel and a blast nozzle having a delivery end opening into said channel, and a'blast channel provided with a sand collection chamber,

and means for producing a Whirl in the line of the blast to clear said chamber and channel.

6. A. sand trap. formed with a sand channel, and a blast nozzle having a blast channel provided with receiving and delivery portions of relatively increasing diameters and an enlarged air receiving and sand collection chamber communicating with the inlet end of the receiving portion of the cha-n nel, and means for supplying a blast to said channel and producing a whirl in the blast to clear said chamber and channel.

7. A sand trap having a sand channel,

and a blast nozzle extending into said'chan-.

nel and provided with a bore having relatively constricted and enlarged receiving and delivery portions, and means for collecting particles of sand. Working into said restricted portion of the bore and producing a whirl current of air to take up and discharge said particles.

- 8. A sand trap having a blast channel, a 

